Question

Two cubes of sides 5cm each,side by side. Find the surface area of new cube.

Answer 1

hey friend

here is your answer

when both the cubes ae placed together

l = 10cm , b = 5cm , h = 5cm

we know that TSA of cuboid = 2 ( lb + bh + hl )

=> 2 ( 10 ×5 + 5 × 5 + 10 × 5 )

=> 2 ( 50 + 50 + 25 )

=> 2 × 125 = 250cm²

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Answer 2

Answer:

firstly the new figure will be a cuboid

when we will join both the cubes the sides will be L= 5 , B = 10 and H = 5  

according to the T.S.A. formula of cuboid = 2( lb + lh + bh )

                                                                     = 2( 50 + 25 + 50)

                                                                     = 2( 125)

                                                                     = 250 cm^2

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